(1986). Chemistry teaching and the environment. Unesco Division of Science Technical and Vocational Education.
Chicago-referens (17:e uppl.)Chemistry Teaching and the Environment. Paris: Unesco Division of Science Technical and Vocational Education, 1986.
MLA-referens (9:e uppl.)Chemistry Teaching and the Environment. Unesco Division of Science Technical and Vocational Education, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.